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48 V hybrid power vehicle limp control method

The technology of a hybrid electric vehicle and a control method, which is applied in the field of vehicles, can solve the problems of limited limp driving of hybrid electric vehicles, and achieve the effect of extending the distance

Active Publication Date: 2019-12-24
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the 48V battery fails and the engine, 48V motor generator and DCDC are in normal state, it usually stops driving directly, causing the limp driving of the hybrid vehicle to be limited.

Method used

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  • 48 V hybrid power vehicle limp control method
  • 48 V hybrid power vehicle limp control method
  • 48 V hybrid power vehicle limp control method

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Embodiment Construction

[0030] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings but not all of them.

[0031] Such as figure 1 and figure 2 As shown, the present embodiment provides a limp control method of a 48V hybrid vehicle. The 48V hybrid vehicle includes a 12V starter, an engine, a 48V motor generator 1, a DCDC 6 and a 48V lithium battery 4, wherein the 12V starter is used for Drive the engine; the engine is the main power so...

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Abstract

The invention relates to the field of vehicles, and discloses a 48 V hybrid power vehicle limp control method. By adopting the method, when a 48 V lithium battery fails, if a motor can work and a 48 Velectric power generator and a DCDC are normal in state, the 48 V electric power generator is driven to generate power by the motor; and the DCDC continuously supplies power to a 12 C low-voltage electric equipment, so that limp driving of a vehicle is realized, and the limp driving distance is prolonged.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a limp control method for a 48V hybrid vehicle. Background technique [0002] In the 48V hybrid vehicle of P0 configuration (the 48V motor generator is connected to the engine through a belt and located at the front end of the engine), the engine is used as the main power source of the 48V hybrid vehicle. When the engine fails, the vehicle cannot limp; When the 48V motor generator or DCDC fails, the vehicle cannot limp for a long time, because the power supply of the 12V power accessories is all from the 12V battery at this time, and the power of the 12V battery will drop rapidly, and it is necessary to stop in a safe area as soon as possible. [0003] However, when the 48V battery breaks down and the engine, 48V motor generator and DCDC are in normal state, they usually stop running directly, causing the limp running of the hybrid vehicle to be limited. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): B60W10/06B60W20/10B60W50/029B60R16/03
CPCB60R16/03B60W10/06B60W20/00B60W50/029B60W2710/06
Inventor 郁大嵬宋浩源尹建坤李想赵永强刘元治程健徐家良郭丁伊
Owner CHINA FIRST AUTOMOBILE
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